Improved composition for pavements, roofing



UNITED STATES Parent @FFIQEO JOSEPH CLARKE, OF SYRACUSE, NEW YORK.

I'M PROVED COMPOSITION FOR PAVEMENTS, ROOFING, 84.0.

Specification forming part of Letters Patent No. dl,9$@, dated November 8,1864.

To all whom it may concem:

Be it known that I, JOSEPH CLARKE, of Syracuse, of Onondaga county, in the State of New York, have invented a certain new and useful Composition for Pavements, Floors, an d Roots; and I do hereby declare that the following is a full, clear, and exact description of the mode of making and appiying the same.

I first take distilled coaltar or asphaltnm, or pine-pitch, and boil it down, so that it may dry easily and be deprived of its offensive smell, and mix in with it boiled hydraulic cement and plaster-of-paris. This boiled pitch is melted in a large vessel. I then stir into it about one-seventh part of gravel and sand or broken hard brick or cindcrs. This composition is then ladled out upon the pavement, floor, or root, and is rolled flat and smooth. I then take hydraulic cement and plaster-of-paris in equal parts, and dry hoil them together. I then take about one-twentieth part of this composition and sift it over the still warm and sticky surface of the pavement.

The cemenband-plaster composition serves I to make the pavement set or harden the quickfloors.

JOSEPH CLARKE. Witnesses:

Jo. O. CLAYTON, V. O. CLAYTON. 

